108 citations · 291 across the 7 of their papers we have counts for
7 papers
Dark Energy and Right-Handed Neutrinos
Riccardo Barbieri, Lawrence J. Hall, Steven J. Oliver +1
We explore the possibility that a CP violating phase of the neutrino mass matrix is promoted to a pseudo-Goldstone-boson field and is identified as the quintessence field for Dark…
Evolving Dark Energy with w Deviating from -1
Lawrence J. Hall, Yasunori Nomura, Steven J. Oliver
Theories of evolving quintessence are constructed that generically lead to deviations from the w = -1 prediction of non-evolving dark energy. The small mass scale that governs evol…
Why Are Neutrinos Light? -- An Alternative
Lawrence J. Hall, Steven J. Oliver
We review the recent proposal that neutrinos are light because their masses are proportional to a low scale, f, of lepton flavor symmetry breaking. This mechanism is testable becau…
Late Time Neutrino Masses, the LSND Experiment and the Cosmic Microwave Background
Z. Chacko, Lawrence J. Hall, Steven J. Oliver +1
Models with low-scale breaking of global symmetries in the neutrino sector provide an alternative to the seesaw mechanism for understanding why neutrinos are light. Such models can…
CMB Signals of Neutrino Mass Generation
Z. Chacko, Lawrence J. Hall, Takemichi Okui +1
We propose signals in the cosmic microwave background to probe the type and spectrum of neutrino masses. In theories that have spontaneous breaking of approximate lepton flavor sym…
Explicit Supersymmetry Breaking on Boundaries of Warped Extra Dimensions
Lawrence J. Hall, Yasunori Nomura, Takemichi Okui +1
Explicit supersymmetry breaking is studied in higher dimensional theories by having boundaries respect only a subgroup of the bulk symmetry. If the boundary symmetry is the maximal…